Fixing #673

src/folio_migration_tools/marc_rules_transformation/rules_mapper_base.py

@@ -537,7 +537,7 @@ def remove_from_id_map(self, former_ids: List[str]):
             if former_id in self.id_map:
                 del self.id_map[former_id]
 
-    def create_entity(self, entity_mappings, marc_field, entity_parent_key, index_or_legacy_id):
+    def create_entity(self, entity_mappings, marc_field: Field, entity_parent_key, index_or_legacy_id):
         entity = {}
         parent_schema_prop = self.schema.get("properties", {}).get(entity_parent_key, {})
         if parent_schema_prop.get("type", "") == "array":
@@ -548,6 +548,9 @@ def create_entity(self, entity_mappings, marc_field, entity_parent_key, index_or
             req_entity_props = []
         for entity_mapping in entity_mappings:
             k = entity_mapping["target"].split(".")[-1]
+            if k == "authorityId" and (legacy_subfield_9 := marc_field.get("9")):
+                marc_field.add_subfield("0", legacy_subfield_9)
+                marc_field.delete_subfield("9")
             if my_values := [
                 v
                 for v in self.apply_rules(marc_field, entity_mapping, index_or_legacy_id)

tests/test_rules_mapper_bibs_no_folio.py

@@ -2,9 +2,9 @@
 from datetime import datetime
 from unittest.mock import Mock
 
+import i18n
 import pymarc
 import pytest
-import i18n
 from dateutil.parser import parse
 from pymarc import Field
 from pymarc import MARCReader
@@ -163,6 +163,7 @@ def test_create_entity_empty_props(mapper: BibsRulesMapper):
             Subfield(code="a", value="De Geer, Jan,"),
             Subfield(code="d", value="1918-2007"),
             Subfield(code="0", value="280552"),
+            Subfield(code="9", value="someid")
         ],
     )
     entity = mapper.create_entity(entity_mappings, marc_field, "contributors", "apa")